CN102611035B - Special tool and method for charged replacement of middle-phase tension insulator - Google Patents

Abstract

The invention discloses a special tool and a method for the charged replacement of a middle-phase tension insulator. The tool comprises a ratchet wheel anchor ear, an insulation hanging arm, an insulation baffle plate and an insulation wire tightener. The special tool and the method for the charged replacement of the middle-phase tension insulator have the advantages that the installation is fast and convenient, the ratchet wheel anchor ear can be directly sheathed from the top end of an electric pole, one end of the insulation hanging arm is inserted onto a positioning rod of the ratchet wheel anchor ear, the angle of the hanging arm is freely regulated through the ratchet wheel operation so that the middle-phase tension insulator is fixedly arranged on a conducting wire side bowl head part on the plane, operators can easily and conveniently take the insulator from the conducting wire side bowl head, the work intensity of the operators can be effectively reduced, and in addition, safety and reliability are realized.

Description

Special tools and methods for live replacement of medium-phase tension insulators

technical field

The present invention relates to a tool for live replacement of insulators, in particular to a special tool and method for live replacement of 10 kV medium-phase tension insulators.

Background technique

In order to ensure the operational reliability of 10 kV distribution lines, it is necessary to maintain and overhaul the distribution lines, and at the same time, replace the deteriorated and damaged insulators that have been put into operation for a long time. However, in order to ensure the stability of power supply and transmission, in order to ensure the normal and stable production of the people's economic life, in order to strengthen the reliable operation of the 10 kV distribution line, without affecting the operation of the distribution line, it is necessary to put into operation for a long period of time The deterioration and damage of insulators are replaced live.

Contents of the invention

The purpose of the present invention is to overcome the disadvantages of the prior art, and provide a special tool for live replacement of the middle phase tension insulator which can realize the live operation.

Another object of the present invention is to provide a method for live replacement of the middle-phase tension insulator.

A special tool for live replacement of middle-phase tension insulators: it includes a ratchet hoop, an insulation boom, an insulation baffle, and an insulation tensioner;

The ratchet hoop includes a ring member that can be inserted into the pole, and the ratchet hoop also includes a positioning rod, and the positioning rod is fixed on the outer peripheral surface of the ring member through the ratchet pawl structure, and the ratchet ratchet The claws are respectively fixed on the hoop and the positioning rod, and the positioning rod can swing up and down relative to the hoop;

The insulating boom includes a casing that can be inserted into the positioning rod of the ratchet hoop, an insulating rope is arranged at one end of the casing, and an insulating hook is arranged at the lower end of the insulating rope;

The insulating baffle is a square plate, on the upper part of the insulating plate, there is an opening slot extending along the middle part of the insulating plate, which can be snapped into the insulating wire tightener and the backup protection rope, and on one side of the upper middle part of the insulating plate The position is provided with an open slot extending along the central part of the insulating plate, which can be snapped into the end of the middle-phase ball head and connected to the hanging ring.

The special tool for live replacement of the middle-phase tension insulator of the present invention uses a ratchet hoop instead of a nylon short jack as a load-bearing hanging point, and fixes the insulating wire tensioner hook on the ratchet hoop member. When working, install the insulating boom on the ratchet hoop, then support the insulating boom to lift the insulator, use the insulating boom to support the insulator, and use the pin removal pliers to remove the spring pin connecting the insulator and the wire to the bowl head, effectively solving the operation Personnel touch the electrified body with one hand and the insulator with the other to prevent the danger of the human body entering the circuit and effectively reduce the labor intensity of the operator.

Two fixing rings for fixing the insulating wire tightener and the backup protection rope are arranged on the ring member of the ratchet hoop.

The fixed rings are respectively arranged on both sides of the ratchet pawl on the ring member.

A method for live replacement of the middle phase tension insulator. (1) The electrician installs the insulating baffle at the middle phase ball head and then uses the wire shielding cover and the insulating blanket to insulate and shield the wire and the insulator in turn. (2) Hold the ratchet The hoop is installed at the top of the pole and fixed. (3) Connect one end of the insulating wire tightener to the ratchet hoop, and the other end to the aluminum alloy grab head and fix it on the wire. (4) Use the wire tightener Tighten the wire, (5) install the backup protection rope, hang the backup protection rope hanging ring on the ratchet hoop, and install the aluminum alloy grab head on the wire on the other side, (6) use an insulating blanket to tighten the wire grab head, tighten (7) Install the insulating small boom on the ratchet hoop and use the insulating hook to lift the middle phase insulator, (8) Use the pin remover to take out the spring pin of the insulator on the wire side , Take the ball head of the insulator out of the bowl head on the wire side, (9) Use an insulating blanket to insulate and shield the metal fittings on the wire side, (10) Take out the spring pin on the hoop side, remove the middle phase insulator and replace it with a new insulator.

This operation method is aimed at the live replacement of the intermediate potential of the current 10 kV medium-phase tension insulator. It is simple and safe, can shorten the operation time by about 30 minutes, effectively reduce the labor intensity of the operators on the pole, and improve the overall work efficiency. Strong practicability and wide application prospect

In summary, compared with the prior art, the present invention has the following advantages:

The method and special tools for live replacement of the middle phase tension insulator are quick and easy to install. The ratchet hoop can be inserted directly from the top of the pole, and one end of the insulating boom is inserted into the positioning rod of the ratchet hoop, and the hoist can be adjusted arbitrarily by using the ratchet. The angle of the arm makes the middle-phase insulator fixed on the wire side bowl on the horizontal plane, and the operator can easily and conveniently remove the insulator from the wire side bowl, which effectively reduces the labor intensity of the operator and is safe and reliable. the

Description of drawings

Figure 1 is an overall schematic diagram of the tool for live replacement of 10 kV medium-phase tension insulators.

Figure 2 is a front view of the ratchet hoop for live replacement of 10 kV medium-phase tension insulators.

Fig. 3 is a front view of the insulation boom for live replacement of 10 kV medium-phase tension insulators.

Fig. 4 is a front view of the insulating baffle for live replacement of 10 kV medium-phase tension insulators.

Reference Signs Explanation 1 ratchet hoop 11 ring member 12 ratchet pawl 13 fixed ring 2 positioning rod 3 insulating boom 4 insulating rope 5 insulating hook 6 insulating baffle 61 opening groove provided on the upper part of the insulating plate 62 located on one side of the insulating plate Set of open slots.

Detailed ways

The present invention will be described in more detail below in conjunction with examples.

Example 1

A method for live replacement of 10 kV medium-phase tension insulators:

1. Park the insulated bucket arm truck at an appropriate operating point, and do a good job of grounding the vehicle. Test the empty bucket at the predetermined position once to confirm that the hydraulic transmission, slewing, telescoping, and lifting mechanisms are normal, and the braking device is reliable; set up safety barriers and slow-moving signs for vehicles.

2. Before work, the person in charge of the work reads the work tickets to the members of the work class, informs the dangerous points, explains the safety measures and technologies, and divides the labor.

3. The electrician in the bucket wears insulating clothing, boots, gloves, and a cap, and carries insulating tools and materials into the insulating bucket.

4. Raise the insulation bucket to the near side phase wire operation point, and the electrician in the bucket uses the wire shielding cover and insulation blanket to insulate and shield the wires, insulators and cross arms in turn.

5. Install the ratchet hoop at the top of the pole and fix it. 6. Connect one end of the insulating wire tightener to the ratchet hoop, and the other end to the aluminum alloy grab head and fix it on the wire. 7. Use Tighten the wire with the wire tensioner. 8. Install the backup protection rope, hang the backup protection rope hanging ring on the ratchet hoop, and install the aluminum alloy grab head on the wire on the other side. 9. Use an insulating blanket to tighten the wire grab head, The exposed non-insulated part of the wire tensioner is insulated and shielded. 10. After installing the insulating boom on the ratchet hoop, use the insulating hook to lift the middle-phase insulator. 11. Use the pin remover to take out the spring pin of the insulator on the side of the wire. The ball head of the insulator comes out of the bowl head on the wire side. 12. Use an insulating blanket to insulate and shield the metal fittings on the wire side. 13. Take out the spring pin on the hoop side, remove the middle phase insulator and replace it with a new insulator.

The parts not described in this embodiment are the same as the prior art.

Example 2

A special tool for replacing a middle-phase tension insulator with electricity, including a ratchet hoop 1, an insulating boom 3, an insulating baffle 6, and an insulating tensioner;

The ratchet hoop includes a ring member 11 that can be inserted into the pole, and the ratchet hoop also includes a positioning rod 2, and the positioning rod is fixed on the outer peripheral surface of the ring member through the ratchet pawl structure, The ratchet pawls 12 are respectively fixed on the hoop and the positioning rod, and the positioning rod can swing up and down relative to the hoop;

The insulating boom includes a casing that can be inserted into the positioning rod of the ratchet hoop, an insulating rope 4 is arranged at one end of the casing, and an insulating hook 5 is arranged at the lower end of the insulating rope;

The insulating baffle 6 is a square plate, on the upper part of the insulating plate is provided with an opening slot 61 extending along the middle part of the insulating plate, which can be snapped into the insulating wire tightener and the backup protection rope, and on the upper part of the insulating plate One side is provided with an open slot 62 extending along the center of the insulating plate, which can be snapped into the end of the middle-phase ball head to connect to the hanging ring. Two fixing rings 13 for fixing the insulating wire tightener and the backup protection rope are arranged on the ring member of the ratchet hoop. The fixed rings are respectively arranged on both sides of the ratchet pawl on the ring member.

The parts not described in this embodiment are the same as those in Embodiment 1.

Claims (4)

1. A special tool for replacing middle-phase tension insulators with electricity, which is characterized in that: it includes a ratchet hoop, an insulating boom, an insulating baffle, and an insulating tensioner; The ratchet hoop includes a ring member that can be inserted into the pole, and the ratchet hoop also includes a positioning rod, and the positioning rod is fixed on the outer peripheral surface of the ring member through the ratchet pawl structure, and the ratchet ratchet The claws are respectively fixed on the hoop and the positioning rod, and the positioning rod swings up and down relative to the hoop; The insulating boom includes a casing that can be inserted into the positioning rod of the ratchet hoop, an insulating rope is arranged at one end of the casing, and an insulating hook is arranged at the lower end of the insulating rope; The insulating baffle is a square plate, on the upper part of the insulating baffle is provided with an opening slot extending along the middle part of the insulating baffle, which can be snapped into the insulation tensioner and the backup protection rope, and in the upper part of the insulating baffle One side is provided with an open slot extending along the center of the insulation baffle, which can be snapped into the end of the middle-phase ball head and connected to the hanging ring. 2. A special tool for live replacement of medium-phase tension insulators according to claim 1, characterized in that: on the ring member of the ratchet hoop, there are two for fixing the insulation tensioner and the backup protection rope. M. 3. A special tool for live replacement of middle-phase tension insulators according to claim 2, characterized in that: said fixing rings are respectively arranged on both sides of the ratchet pawl on the ring member. 4. A method for live replacement of middle phase tension insulators using the special tool for live replacement of middle phase tension insulators according to claim 1, characterized in that: (1) after the electrician installs the insulating baffle at the middle phase ball head Use the wire shielding cover and insulation blanket to insulate and shield the wires and insulators in turn. (2) Install the ratchet hoop at the top of the pole and fix it. (3) Connect one end of the insulation tensioner to the ratchet hoop , the other end is connected with the aluminum alloy grab head and fixed on the wire, (4) Use the wire tightener to tighten the wire, (5) Install the backup protection rope, hang the ring end of the backup protection rope on the ratchet hoop, backup protection The other end of the rope is installed on the wire through the aluminum alloy grab head. (6) Use an insulating blanket to insulate and shield the exposed non-insulated parts of the grab head and the wire tightener. (7) Install the insulating boom on the ratchet hoop Finally, use the insulating hook to lift the middle-phase insulator, (8) use the pin remover to take out the spring pin of the insulator on the side of the wire, and take the ball end of the insulator out of the bowl head on the wire side, (9) Use an insulating blanket to close the metal fittings on the wire side For insulation shielding, (10) Take out the spring pin on the side of the hoop, remove the middle phase insulator and replace it with a new one.